SIST EN 61922:2003

High-frequency induction heating installations - Test methods for the determination of power output of the generator

Applicable to industrial radio- or high-frequency induction heating installations used for the purpose of thermal applications (e.g. for surface hardening, welding, soldering, melting, forging, zone refining of semiconductors, etc.). Relates to high-frequency induction heating installations in the frequency range up to 300 MHz for power levels of 500 W and above, comprising high-frequency generators and inductors together with necessary mechanical devices for charge handling (e.g. hardening machines). The main purpose is to provide the test methods for the determination of output power of industrial high-frequency induction heating power sources.

Hochfrequenz-Induktionserwärmungsanlagen - Prüfverfahren für die Bestimmung der Ausgangsleistung des Generators

Installations de chauffage par induction haute fréquence - Méthodes d'essai pour la détermination de la puissance de sortie du générateur

Applicable aux installations industrielles de chauffage par induction radiofréquence ou haute fréquence utilisées dans les applications thermiques (par exemple pour le durcissement des surfaces, le soudage, le brasage, la fusion, le forgeage, la rectification des zones des semiconducteurs, etc.). Concerne les installations de chauffage par induction haute fréquence dans la gamme de fréquences jusquà 300 MHz à des niveaux de puissance de valeur supérieure ou égale à 500 W, comprenant des générateurs haute fréquence et des inducteurs avec les dispositifs mécaniques nécessaires pour le traitement de charge (par exemple machines de durcissement). A pour principal objet de fournir des méthodes dessai pour la détermination de la puissance de sortie des sources dénergie pour le chauffage industriel par induction haute fréquence.

High-frequency induction heating installations - Test methods for the determination of power output of the generator

General Information

• Status: Published
• Publication Date: 31-Mar-2003
• ICS: 25.180.10 - Electric furnaces
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Apr-2003
• Due Date: 01-Apr-2003
• Completion Date: 01-Apr-2003
• Ref Project: EN 61922:2002 - High-frequency induction heating installations - Test methods for the determination of power output of the generator

Standards Content (Sample)

SLOVENSKI SIST EN 61922:2003

STANDARD
april 2003
High-frequency induction heating installations - Test methods for the determination
of power output of the generator
ICS 25.180.10 Referenčna številka
SIST EN 61922:2003(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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EUROPEAN STANDARD EN 61922
NORME EUROPÉENNE
EUROPÄISCHE NORM October 2002

ICS 25.180.10


English version


High-frequency induction heating installations -
Test methods for the determination
of power output of the generator
(IEC 61922:2002)


Installations de chauffage  Hochfrequenz-
par induction haute fréquence - Induktionserwärmungsanlagen -
Méthodes d'essai pour la détermination Prüfverfahren für die Bestimmung
de la puissance de sortie du générateur der Ausgangsleistung des Generators
(CEI 61922:2002) (IEC 61922:2002)





This European Standard was approved by CENELEC on 2002-09-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels


© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61922:2002 E

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EN 61922:2002 - 2 -
Foreword
The text of document 27/314/FDIS, future edition 1 of IEC 61922, prepared by IEC TC 27, Industrial
electroheating equipment, was submitted to the IEC-CENELEC parallel vote and was approved by
CENELEC as EN 61922 on 2002-09-01.
The following dates were fixed:

– latest date by which the EN has to be implemented
 at national level by publication of an identical
 national standard or by endorsement (dop) 2003-06-01

– latest date by which the national standards conflicting
 with the EN have to be withdrawn (dow) 2005-09-01

Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annex ZA is normative and annex A is informative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61922:2002 was approved by CENELEC as a European
Standard without any modification.
__________

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- 3 - EN 61922:2002
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
1)
IEC 60050-841 - International Electrotechnical - -
Vocabulary (IEV)
Chapter 841: Industrial electroheating

1)
2)
IEC 60519-1 - Safety in electroheat installations EN 60519-1 1993
Part 1: General requirements

IEC 60519-3 1988 Part 3: Particular requirements for EN 60519-3 1995
(mod) induction and conduction heating and
induction melting installations

IEC 61308 1994 High-frequency dielectric heating EN 61308 1996
installations - Test methods for the
determination of power output

1) 2)
CISPR 11 (mod) - Industrial, scientific and medical (ISM) EN 55011 1998
radio-frequency equipment - Radio
disturbance characteristics - Limits and
methods of measurement



1)
Undated reference.
2)
Valid edition at date of issue.

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NORME CEI
INTERNATIONALE IEC
61922
INTERNATIONAL
Première édition
STANDARD
First edition
2002-06
Installations de chauffage par induction
haute fréquence –
Méthodes d'essai pour la détermination
de la puissance de sortie du générateur
High-frequency induction heating installations –
Test methods for the determination of power
output of the generator
© IEC 2002 Droits de reproduction réservés ⎯ Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail]  Web: www.iec.ch
CODE PRIX
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PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
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Pour prix, voir catalogue en vigueur
For price, see current catalogue

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61922 © IEC:2002 – 3 –
CONTENTS
FOREWORD.5
1 Scope and object .7
2 Normative references.7
3 Definitions .9
4 Tests loads.9
4.1 Conical calorimeter load .11
4.2 Lamp load temperature method .11
4.3 Matched resistive loads .11
5 Description of tests .11
5.1 Conical calorimeter load .11
5.2 Lamp load temperature method .15
5.3 Matched resistive loads .17
Annex A (informative) Calculation of the test inductor inductance .31
Figure 1 – Definition of the output power .19
Figure 2 – Example of the calorimeter .21
Figure 3 – Example of the water resistor for the power measurement.23
Figure 4 – Example of the one-turn test inductor.25
Figure 5 – Example of the adjustable inductance .27
Figure 6 – Example of the circuit for the measurement by the lamp load temperature method 29
Figure A.1 – Main dimensions of test inductors for the conical calorimeter .33

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61922 © IEC:2002 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-FREQUENCY INDUCTION HEATING INSTALLATIONS –
TEST METHODS FOR THE DETERMINATION
OF POWER OUTPUT OF THE GENERATOR
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, the IEC publishes International Standards. Their preparation is
entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. The IEC collaborates closely with the International Organization
for Standardization (ISO) in accordance with conditions determined by agreement between the two
organizations.
2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
from all interested National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61922 has been prepared by IEC technical committee 27: Industrial
electroheating equipment.
The text of this standard is based on the following documents:
FDIS Report on voting
27/314/FDIS 27/325/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.
Annex A is for information only.
The committee has decided that the contents of this publication will remain unchanged until 2008.
At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.

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61922 © IEC:2002 – 7 –
HIGH-FREQUENCY INDUCTION HEATING INSTALLATIONS –
TEST METHODS FOR THE DETERMINATION
OF POWER OUTPUT OF THE GENERATOR
1 Scope and object
This International Standard is applicable to industrial radio- or high-frequency induction heating
installations used for the purpose of thermal applications (e.g. for surface hardening, welding,
soldering, melting, forging, zone refining of semiconductors, etc.).
This standard relates to high-frequency induction heating installations in the frequency range
up to 300 MHz for power levels of 500 W and above, comprising high-frequency generators
and inductors together with necessary mechanical devices for charge handling (e.g. hardening
machines).
The main purpose of this standard is to provide the test methods for the determination of
output power of industrial high-frequency induction heating power sources.
Loads as described in this standard may be used in compliance assessment of electromagnetic
compatibility according to CISPR 11.
This standard relates to generator capacity of operation under continuous rated conditions as
specified by the manufacturer.
The methods of measurement of power output of generators operating in pulse mode with short
duty cycles (e.g. the adiabatic calorimeter) are under consideration.
Electronic systems of power measurement are commercially available, but care must be taken
in their application because accuracy can not be guaranteed, particularly at higher frequencies.
These instruments require high current transformers and voltage transformers for the output
power measurements and they also are subject to errors at higher frequencies. These methods
require expert knowledge for successful application and therefore are not detailed in this
standard.
2 Normative references
The following referenced documents are indispensable for the application of this document. For
dated references, only the edition cited applies. For undated references, the latest edition of
the referenced document (including any amendments) applies.
IEC 60050-841, International Electrotechnical Vocabulary (IEV) – Chapter 841: Industrial
electroheating
IEC 60519-1, Safety in electroheat installations – Part 1: General requirements

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61922 © IEC:2002 – 9 –
IEC 60519-3:1988, Safety in electroheat installations – Part 3: Particular requirements for
induction and conduction heating and induction melting installations
IEC 61308:1994, High-frequency dielectric heating installations – Test methods for the
determination of power output
CISPR 11, Industrial, scientific and medical (ISM) radio-frequency equipment – Electro-
magnetic disturbance characteristics – Limits and methods of measurement
3 Definitions
For the purposes of this International Standard, the definitions given in IEC 60050-841,
IEC 60519-1 and IEC 60519-3 as well as the following, apply.
3.1
high-frequency output power
power measured at the power output terminals of the generator, feeding to the test load as
defined in this standard
NOTE This definition is explained in figure 1. The left side of the drawing contains the generator and is limited by
its two output terminals. The load is connected to these terminals. All power that appears outside of the generator
case is defined as the output power of the generator. It comprises the power dissipated in the inductor, power
leads, calorimeter, etc.
3.2
calorimeter
device for the measurement of high-frequency power, which consists of a part cooled by water,
under controlled flow and measured temperature difference between water inlet and outlet
temperatures
NOTE This part is made of steel or other conductive material into which high-frequency currents are induced.
3.3
surface power density
quotient of the power and the active surface of the calorimeter
3.4
loop inductor
inductor in the shape of a loop brought close to the load without forming a full circle around it
3.5
test load
equipment consisting of the connection leads, the inductor and the calorimeter. If a resistor
without reactive elements is used as a load, an auxiliary resonant circuit is used for the
elimination of the harmonic power. If this auxiliary circuit is not part of the generator, the losses
in this circuit are measured with the losses in the other parts of the test load
4 Tests loads
There are three different types of output power test loads for use in high-frequency induction
heating installations. Only the main ones are outlined. Detailed constructions shall conform to
known engineering techniques.

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61922 © IEC:2002 – 11 –
4.1 Conical calorimeter load
The conical calorimeter load is generally used as part of the test load. This c
...